Turbo diamond grinding wheel 1.Size:4",4.5",5",7",9'',10'' ... .for rough medium fine floor 3.High efficiency and durable Turbo diamond grinding wheel 1.Size:4",4.5",5",7",9'',10 ... .for rough medium fine floor 3.High efficiency and durable Turbo diamond grinding cup wheelBontai , are the one of leading manufacturer in China ...